This may seem as tiny insignificant museum to common travelers and would be disappointed to pay 6 euros to enter, but to me Architect, it was the most fascinating architectural masterpiece I visited in Barcelona, and liked it as much as the Sagrada Familia. In fact when you have the knowledge that this oeuvre was built at the same time when women dressed in huge gowns and towering hairstyles, you can't help but appreciate the minimalism of this place. As Mies says: God is in the Detail.